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David
10-05-2008, 03:55 PM
The energy in any body with mass is equal to that body's mass times the square of the speed of light.

This is an ENORMOUS number.

All mass has energy . . . & all energy has mass. Every second, the Earth is hit by 4.5 pounds of sunlight.

E = mc^2

strandinthewind
10-05-2008, 04:25 PM
"relativistic mass"

explains more than a little :shrug: